M61508 MITSUBISHI [Mitsubishi Electric Semiconductor], M61508 Datasheet - Page 21

• Manufacturer Part Number: M61508
• Description: THE ELECTRIC VOLUME of BUILD-IN NON FADER VOLUME with TONE CONTROL
• Manufacturer: MITSUBISHI [Mitsubishi Electric Semiconductor]

2 LOUDNESS GAIN SETTING
D-61508-98-C
Output Volutage (VOUT) of Setting Structure of Upper Figure
VIN
THE ELECTRIC VOLUME of BUILD-IN NON FADER VOLUME with TONE CONTROL
Lower Figure is Structure of Loudness Circuit.
It is noted as Volume1Output Volutage = V1, Loudness Filter Output Voltage = V2,
VOUT and Gv (Boost quantity) is given at the lower formula
ex.) VIN = 1Vrms/60Hz,Volume1= - 30dB,
From : Volume1,Loudness Volume attenuation quantity
Become : V1 = 31.6mVrms
If the subsitudes the equation for the upper formula,
the following equation is given :
In the item,the Loudness Gain Setting example is shown, when Volume1 fixation and
doing the Loudness Volume variably. Please refer to Plan.
Output Volutage and Boost Quantity of 60Hz of Loudness Volume = -20dB setting
10
LOUDNESS VOLUME
V2 = 100mVrms
VOUT = 31.6m + 100m
VOUT = V1 + V2 (Vrms)
Gv = 20 log
Gv = 20 log
=131.6mVrms
= 12.4dB is obtained.
VOLUME 1
(31.6m + 100m)
(V1 + V2)
VIN
1
LOUDNESS
FILTER
(Gv=0dB)
MITSUBISHI
ELECTRIC
- (Volume 1 attenuation quantity) (dB)
- (-30dB)
V1
V2
MITSUBISHI SOUND PROCESSOR ICs
R
R
Frequency (Hz)
Gv
R
M61508FP
Volume 1= -30dB
R
( /22)
21
VOUT